The petitioner, Arris Group, filed a petition requesting inter partes review (IPR) of claims of a patent that had been the subject of an earlier IPR involving the same parties and different claims of the same patent.

In an appeal challenging an alteration to a previously granted
preliminary injunction, the U.S. Court of Appeals for the Federal
Circuit found that it lacked jurisdiction over an appeal because
the appeal was filed more than 30 days after the original
injunction and the subsequent alteration did not substantially
change the legal relationship between the parties.

Addressing claim construction of a term with disputed grammar, the U.S. Court of Appeals for the Federal Circuit affirmed in part the district court's construction and remanded the case,
explaining that grammatical rules give way to the written description when construing claims.